Pavement-making device



May 19, 1925.

W. C. BURRELL PAVEMENT MAKING DEVICE Filed DSC. l0, 1925 PiatenteidlMlay19,V 1.925.

UNITED STATES l 1,538,619 PATENT OFFICE.

WILLIAM C.A lURRELL, 0F KAN'KALKFLIEI,- ILLINOIS.

PAVEMENT-MAKIG DEVICE.

Application filed December 10, 1923. Serial No. 679,587.

T0 all whoml z't may concern:

Be it known that I, WILLIAM C. BURRELL, a citizen of the United States,residing at Kankakee, vin the county of Kankakee and State of Illinois,have invented certain new and useful Improvements in Pavement-Mak-l, ingDevices, of which the following is a specification.

This invention relates to ing devices.

It will be explained as applied to a parting strip or confining wallused to `define vand separate contiguous sections of concrete or similarroadway-or sidewalk.

In building concrete roadways it has become common practice tolongitudinally divide the roadway into separated or partly separatedsections. Such divisions facilitate the aft of laying the concrete. and'seems to serve# in a large measure, to prevent subsequent irregularcracking. It may also vfacilipavement mak- I i tate repair andreplacement of portions of the pavement. In carrying such work into.practical execution it is essentially necessary that the aforesaid stripof metal shall be irmlyand securelysupported and held on one-edge andthat the holding means shall engage the strip -in such manner as topreke'yor-pin to support t e strip.

Vvent anyrelative movement of the connected parts.

One of .the objects is to provide animproved device of the characterdescribed.

Another object is to provide an improved, contractible strip-supportingpin for securely holding and supporting the strip edge on duripg theoperation of laying the concrete ace.

other obj ectis to provide astrip which in cooperation with the pin willeffect nterlocking of the strip sections.

A further object is to provide an improved supporting and holding' p inywhich will facilitate the application of the strips and ,which isself-adjusting to hold the strips togetherand support them in place.

vAnother object is to 1provide an improved strip-supporting pin w ich isvself-adjusting `with respect to the orifice into which itmay be driven;which possesses' maximum strength proportional to its :weight ;`v which1.esily and cheaply be constructed and ap 1e other object is to` rovidean improved .O ther objects and advantageswill hereinafter-(appear fromva consideration of the fol-A lowing description, when taken inconjunctlon wlth the drawings, where1n Fig. 1 is a perspective view oftwo inter? lapped strips as they appear when supported on the ground forthe purpose described.

Fig. 2 is an enlarged cross-section taken on line 2 2- of Fig. 1.

Fig. 3 is a section taken on line 3-3 of Fig.

Fig. 4 is a^ modification of Fig. 1.

In all the views the same reference characters are employed to indicatesimilar parts.

/ The strip 5 may be made of suitable metal, such as so-calledgalvanized sheet iron. The striphas a longitudinally extending laterallyprojecting rib or bead 6, thru which a pin or key 7 is to be driven intothe ground.

In the several figures of the drawings I have shown the pin driven thrucorresponding registering holes 8" in the beads near the ends ofadjoining strips. In this event the pin 7 not only supports both stripsin edge on position, but also holds the lapped ends together. There maybe one or more holes 8 intermediate the ends of the strips thru which toinsert the supporting pin 7 foradditional strength.

To make a continuous strip of a plurality of sections, the ends arelapped, as shown in Fig. 1 and the pinis placed thru the registeringholes. In Fig. 4 the ends of' adjoining strips are abutting to bring thestrips in true alignment, and a clip 9 having like registering holes iscaused to bridge the joint and the pin is then driven thru all of theholes. A single clip 9 may be used, in which event two pins may beemployed.

Another pin may be driven thru the holes shown by dotted lines at 10.Instead of using two pins the clip 9 may be riveted to the 'strips 5 or5, as at 11. If a more secure jointis desired another clip 9 maybe'placed on the opposite sides 0f thestrips and riv-v eted as describedor held by use of two pins. yThe pin 7 istapered near its point in twodirections so that it will easily pass thru the holes 8. The pin islarger in its mi'di yield/ing fit with the holes.- l

. The Wall of thev pin is uniform in trans- .v'erse thickness. It ispreferably punched of sheet metal and formed into parti-cylindricalconfiguration` having a 'longer vradius (l than the radii of the holesthru which it is to be driven.

'Ihe pin is shown to extend circumferentially toan extent equal to lessthan one-half of a circle. It may extend further, if desired. It islight, strong, inexpensive, self-adjusting to tightly it the holes, andmay easily be driven into the ground, or into an opening in moreunyielding material in which it will secure itself because of itstransversely contractible nature.

The projection 6 may consist of a crimp in the metal to form a bead. Theproject-ion stitl'ens the strip and also forms a groove or tongue, asdesired, in the cement block. The adjacent block forms the other memberof the tongue and groove joint.

The lower end of the pin is tapered in two directions so as to moreeasily pass thru the holes in the strip into which it is to be driven.The tapering effect is accomplished.

by having the salient edges converge toward each other near the pointedend.

The largest diameter of the pin is from the outside surfaces of itslongitudinal terminal or salient edges aso that when the pin is driveninto a hole o smaller diameter it will contract transversely by theseedges approaching nearertogether andas the pin is made of resilientmetal it will tightly engage all of the holes or apertures into which itmay be driven. v

Having described my invention what I claim as new and fdesire to secureby Letters Patent, is

1. In combination with a strip having af laterally projecting,longitudinally extending bead, said bead having perforations extendingtransversely of the wall to receive a pin to be driven therethrough tohold the strip on its edge anda laterally contractible inlarger indiameter than said perfcrations to be driven thru said perforations.

2. In combination with a strip of sheet metal, crimped outwardly nearits median transverse dimensions lto form a laterally projectinglongitudinally extending bead,

said beadv erforated yin a line substantially parallel with the marginsof the strip to receive a pin to support the strip on one side edge, anda laterally contractiblapin larger in its larger diameter to be drlventhru said perforations and into the ground.-

A8. In combination with a strip of sheet metal crimped outwardly to forma laterally' projecting longitudinally extending bead, said beadperforated, near its juncture, with the margins of the strip, and atransversely contractible pin larger in diameter than said perforationsto pass thru the perfora-I it is to be driven to hold the stripstogether.

5. A. pin, for the purpose described, colnprising a trough-like strip ofresilient sheet metal curved transversely into parti-circular form anduniformly tapered through-v out the major portion of itsA length andtapered in two directions near its point.

6. A support for pavement parting strips comprising a pin ofparti-circular cross section formed from a sheet of metal curveduniformly throughoutthe major portion of its length and having adjacentedges of the sheet near one end converge toward a point. 7. A supportfor-pavement parting strips comprising a hollow pin of parti-circularcross-section throughout the major portion of its length formed ofresilient sheet metal and having the longitudinal edges of the pin nearone end` converge toward a point. 8. Atransversely contractible pin madeof sheet metal and curved transversely and uniformly throughout themajor portion of its length 'and uniformly tapered longitudinally nearone end.

In testimony whereof I hereunto set my hand.

WILLIAM o. BURRELL.

